KYB SM5831 Suspension Shock Absorber Mount - Rear Upper

KYB SM5831 Rear Upper Strut Mount

KYB SM5831 is a rear upper suspension shock absorber mount engineered for Mercedes-Benz applications that need a direct OE-style replacement. It addresses the noise, vibration, and harshness that can develop when original vibration insulators harden with age.

Key Features

• OE-quality replacement strut mount for the specified application
• Superior rubber helps reduce road noise, vibration, and harshness
• Mount bearings support smoother steering response and front-end alignment retention
• Matched-grade studs and nuts for a precise service replacement
• Engineered specifically for Mercedes-Benz fitment
• Part number SM5831 for easy identification

Product Details

As part of KYB Mount Components, the SM5831 is built to restore suspension isolation and steering feel where worn upper mounts can transmit impact and vibration into the cabin. KYB designs these mounts as application-specific replacement components, with bearing and rubber construction selected to match the demands of the vehicle platform. For drivers searching for a rear upper strut mount for Mercedes-Benz C300, Mercedes-Benz GLK350, Mercedes-Benz C63 AMG, or Mercedes-Benz C350, SM5831 provides a direct replacement solution. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Vehicle Fitment

• Fits 2008-2014 Mercedes-Benz C300, rear upper. Not compatible with electronic suspension systems.
• Fits 2010-2012 Mercedes-Benz GLK350, rear upper.
• Fits 2008-2011 Mercedes-Benz C63 AMG, rear upper.
• Fits 2008-2010 Mercedes-Benz C350, rear upper.

Common Issues This Part Can Address

• Clunking or knocking from a worn rear upper mount
• Excess cabin vibration from hardened suspension insulators
• Harsh ride feel over bumps and rough pavement
• Reduced steering smoothness caused by worn mount bearings
• Alignment instability related to deteriorated front-end support components

Installation Notes and Tips

Confirm the vehicle is equipped for this rear upper mount application before ordering, especially on 2008-2014 Mercedes-Benz C300 models with electronic suspension systems. Inspect the surrounding suspension components, bearing surfaces, and fasteners during service so the new mount is installed on a clean, wear-free assembly. Verify the part number SM5831 against the vehicle’s original mount before installation.

Quality Assurance

KYB is known for OE-level suspension replacement components, and the SM5831 follows that approach with application-specific engineering for Mercedes-Benz. The mount is built to restore proper isolation and steering support while matching the vehicle’s original suspension requirements.